Battery charger



FIG. 1 is a perspective view of our new battery charger;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The left side elevational view is symmetrical to the right side elevational view. 

The ornamental design for a battery charger, as shown and described. 